CN202903251U

CN202903251U - Intelligent electromagnetic flow meter with short message service module function

Info

Publication number: CN202903251U
Application number: CN 201220527195
Authority: CN
Inventors: 阮立志
Original assignee: HANGZHOU ZHENHUA INSTRUMENT CO Ltd
Current assignee: HANGZHOU ZHENHUA INSTRUMENT CO Ltd
Priority date: 2012-10-16
Filing date: 2012-10-16
Publication date: 2013-04-24
Anticipated expiration: 2022-10-16

Abstract

The utility model relates to an electromagnetic flow meter, in particular to an intelligent electromagnetic flow meter with a short message service module function. The intelligent electromagnetic flow meter with the short message service module function comprises an electromagnetic flow transducer, an amplifying filter circuit, an alternating current/direct current (A/D) converting unit, an energizing circuit, a single chip microcomputer control unit, a liquid crystal display unit, a data storage unit, a keyboard control unit, a communication interface and a short message service sending module, wherein the electromagnetic flow transducer, the amplifying filter circuit, the A/D converting unit and the single chip microcomputer control unit are in electrical connection in sequence. The single chip microcomputer control unit generates energizing signals and is connected with the electromagnetic flow transducer through the energizing circuit. The liquid crystal display unit, the data storage unit and the keyboard control unit are respectively connected with the single chip microcomputer control unit, and the short message service sending module is connected with the single chip microcomputer control unit through the communication interface. The defect that a traditional electromagnetic flow meter in the prior art is single in communication mode is overcome, the electromagnetic flow meter is enabled to have functions of remote data collection and remote control and is intelligentized and networked.

Description

Intelligent electromagnetic flowmeter with short message module function

Technical field

The utility model relates to a kind of electromagnetic flowmeter, especially a kind of intelligent electromagnetic flowmeter with short message module function.

Background technology

Electromagnetic flowmeter is the instrument that is used for measuring the conductive liquid volumetric flow rate based on Faradic electricity magnetic induction theorem that develops rapidly along with the development of electronic technology.Its principle of work is when conducting liquid flows through the measuring tube that is enclosed in the magnetic field, will produce the induction electromotive force that is directly proportional with mean flow rate in the flow direction and the two perpendicular direction of magnetic field.And magnetic field intensity wherein to be distance between a constant (by coil current control), the detecting electrode also fix, so flow rate of liquid is the unique variable of induction electromotive force, output signal and the flow of electromagnetic flowmeter are linear.

Present electromagnetic flowmeter is many on hardware configuration to be made of the separate type analog device, make the structure of instrument, function extendibility and working service are all difficult, network communication interface is single, the traditional communication mode of many employings, such as wire telephony, Ethernet the transmission of data etc., but the widespread use field of electromagnetic flowmeter, such as cement, chemical industry, light textile, metallurgical, the mine, papermaking, medicine, plumbing, food and drink, sugaring, brewage and the numerous areas such as environmental protection, exist in a large number work under bad environment, lay the very inconvenient situation of wire cable, seriously limited the Function Extension of electromagnetic flowmeter, user's opening and networking demand are so that electromagnetic flowmeter is not easy to Long-distance Control and remote data acquisition.

The utility model content

The utility model has solved the shortcoming that existing electromagnetic flowmeter communication module is single, can't carry out Long-range Data Transmission, provide a kind of adopt existing mature technology with regard to can realize, can carry out intelligent electromagnetic flowmeter Wireless Data Transmission, that have the short message module function, it can utilize multiple existing short message way to carry out Wireless remote control.

The technical scheme that its technical matters that solves the utility model adopts is:

A kind of intelligent electromagnetic flowmeter with short message module function, comprise electromagnetic flow transducer, filtering and amplifying circuit, A/D converting unit, field circuit, Single-chip Controlling unit, liquid crystal display, data storage cell, Keyboard Control unit, communication interface and short message sending module, electromagnetic flow transducer, filtering and amplifying circuit, A/D converting unit and Single-chip Controlling unit are electrically connected successively, and the Single-chip Controlling unit generates excitation signal and is connected to electromagnetic flow transducer by field circuit; The Single-chip Controlling unit is electrically connected with liquid crystal display, data storage cell and Keyboard Control unit respectively, and described short message sending module is connected to the Single-chip Controlling unit by communication interface.Described electromagnetic flow transducer is responsible for the collection of fluid to be measured flow, the Single-chip Controlling unit produces the field circuit generation induced field that excitation signal acts on electromagnetic flow transducer, after electromagnetic flow transducer delivers the flow signal that obtains to the Single-chip Controlling cell processing after amplification, filtering, A/D sample simultaneously, exported the information such as instantaneous delivery by liquid crystal display, and sent on mobile phone or the supervisory control comuter by the short message sending module.Described communication interface and short message sending module join, and are used for realizing remote data acquisition and Long-distance Control to electromagnetic flowmeter.Described short message sending module both can send the GSM short message, also can send the GPRS short message, took full advantage of prior art and network, and multiple remote data acquisition and Long-distance Control mode are provided.

As preferably, described communication interface is RS-232 interface or RS-485 interface.Described communication interface can use RS-232, also can use RS-485.If use the RS-485 communication interface, then need to support the use the RS-232/RS-485 converter.

The beneficial effects of the utility model are: after having adopted the short message sending module, utilize existing mature technology, remedied easily the in the past single defective of electromagnetic flowmeter communication function module, make electromagnetic flowmeter have the short message module function, remote data acquisition and the remote control function of electromagnetic flowmeter have greatly been improved, for intelligent electromagnetic flowmeter carries out remote data acquisition and Long-distance Control provides solution in rugged surroundings.

Description of drawings

Fig. 1 is a kind of circuit principle structure block diagram of the utility model.

Among the figure: 1, electromagnetic flow transducer; 2, filtering and amplifying circuit; 3, A/D converting unit; 4, field circuit; 5, Single-chip Controlling unit; 6, liquid crystal display; 7, data storage cell; 8, Keyboard Control unit; 9, communication interface; 10, short message sending module.

Embodiment

Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.Should be appreciated that enforcement of the present utility model is not limited to the following examples, any pro forma accommodation and/or change that the utility model is made all will fall into the utility model protection domain.

A kind of intelligent electromagnetic flowmeter with short message module function as shown in Figure 1, comprise electromagnetic flow transducer 1, filtering and amplifying circuit 2, A/D converting unit 3, field circuit 4, Single-chip Controlling unit 5, liquid crystal display 6, data storage cell 7, Keyboard Control unit 8, communication interface 9 and short message sending module 10, electromagnetic flow transducer 1, filtering and amplifying circuit 2, A/D converting unit 3 and Single-chip Controlling unit 5 are electrically connected successively, and Single-chip Controlling unit 5 generates excitation signal and is connected to electromagnetic flow transducer 1 by field circuit 4; The Single-chip Controlling unit is electrically connected with liquid crystal display 6, data storage cell 7 and Keyboard Control unit 8 respectively, and described short message sending module 10 is connected to Single-chip Controlling unit 5 by communication interface 9.

Wherein electromagnetic flow transducer 1 converts the flow signal of fluid to be measured in the conduit to corresponding voltage signal according to linear relationship.Single-chip Controlling unit 5 generation excitation signals for electromagnetic flow transducer 1 provides exciting current, make its field coil produce induced field by field circuit 4.The small voltage signal that filtering and amplifying circuit 2 is exported sensor 1 amplifies, and filters out with the irrelevant undesired signal of measured signal and make the signal purifying, and the analog quantity of amplification is provided for A/D converting unit 3.A/D converting unit 3 converts analog quantity to digital quantity and offers Single-chip Controlling unit 5 and process.Liquid crystal display 6 is finished the real-time demonstration of the information such as the instantaneous delivery, integrated flow of electromagnetic flowmeter.Data storage cell 7 is deposited the parameters that the integrated flow data that obtain after flux cumulating calculates and normal operation institute of system must settings.The local setting and control of parameter of electromagnetic flowmeter finished in Keyboard Control unit 8.Communication interface 9 provides the STD bus communication interface for electromagnetic flowmeter, selects RS-232 interface or RS-485 interface.Short message sending module 10 is sent to mobile phone or computing machine with the mode of various data messages by short message.

The present utility model makes the deviser according to actual needs, select the contour performance integrated circuit of different system programmable devices to strengthen opening, reliability and the communication function of system, thereby realize the remote data acquisition system based on the short message module wireless transmission, add corresponding sensor, utilize single-chip microcomputer to carry out the Real-time Collection of multiparameter, self-timing sends in the computing machine in laboratory or on the mobile phone, realize automatic collection and the wireless transmission of Electromagnetic Flow parameter, reduced the workload of measuring.

The utility model provides a kind of thinking and method that realizes having the intelligent electromagnetic flowmeter system of short message module function; method and the approach of this technical scheme of specific implementation are a lot; art is described to be preferred implementation of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications; these improvements and modifications also should be considered as protection scope of the present invention, in the present embodiment not clear and definite each ingredient all available prior art realized.

Claims

1. intelligent electromagnetic flowmeter with short message module function, it is characterized in that: comprise electromagnetic flow transducer (1), filtering and amplifying circuit (2), A/D converting unit (3), field circuit (4), Single-chip Controlling unit (5), liquid crystal display (6), data storage cell (7), Keyboard Control unit (8), communication interface (9) and short message sending module (10), electromagnetic flow transducer (1), filtering and amplifying circuit (2), A/D converting unit (3) and Single-chip Controlling unit (5) are electrically connected successively, and Single-chip Controlling unit (5) generate excitation signal and are connected to electromagnetic flow transducer (1) by field circuit (4); The Single-chip Controlling unit is electrically connected with liquid crystal display (6), data storage cell (7) and Keyboard Control unit (8) respectively, and described short message sending module (10) is connected to Single-chip Controlling unit (5) by communication interface (9).

2. the intelligent electromagnetic flowmeter with short message module function according to claim 1, it is characterized in that: described communication interface is RS-232 interface or RS-485 interface.